UCC28251PWR

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UCC28251PWR

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IC REG CTRLR MULT TOP 20TSSOP

  • HerstellerTexas Instruments

  • Herstellerteil #UCC28251PWR

  • Auf Lager5639

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Spezifikationen

Attribut Wert
Part Status Active
Output Type PWM Signal
Function Step-Up/Step-Down
Output Configuration Positive
Topology Full-Bridge, Half-Bridge, Push-Pull
Number of Outputs 2
Output Phases 1
Voltage - Supply (Vcc/Vdd) 4.7V ~ 17V
Frequency - Switching 42kHz ~ 945kHz
Synchronous Rectifier Yes
Clock Sync No
Control Features Current Limit, Enable, Frequency Control, Ramp, Soft Start
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 20-TSSOP
Base Product Number UCC28251

Übersicht

Description

The UCC28251PWR is a high-performance, peak current mode control IC designed for power supply applications. It belongs to the family of integrated circuits produced by Texas Instruments and is typically used in switch-mode power supplies (SMPS) to enhance efficiency, reliability, and performance.
Key features of the UCC28251PWR include wide input voltage range, adjustable output voltage, and the ability to operate in continuous or discontinuous mode. It also offers synchronous rectification, which significantly improves efficiency in high-power applications. The IC incorporates advanced protection features such as over-voltage protection (OVP), over-current protection (OCP), and thermal shutdown.
With its ability to drive external MOSFETs, the UCC28251PWR is suitable for various applications, including telecom, industrial, and consumer electronics. Its versatility and efficiency make it an ideal choice for designers looking to create robust power supply solutions.

Equivalent

Equivalent products for the UCC28251PWR include the UCC28252, UCC28253, and UCC28950. These devices are also from Texas Instruments and serve similar functions in power management applications. Additionally, consider exploring the TL494 and L6599 as alternative options, though they may have different specifications. Always verify compatibility with your specific application requirements.

Features

The UCC28251PWR is a high-performance, dual-channel PWM controller designed for power supply applications. Key features include:
1. Current Mode Control: Offers improved transient response and stability.
2. Integrated Drivers: Built-in high and low-side gate drivers for efficient MOSFET control.
3. Voltage Regulation: Provides tight output voltage regulation with minimal variation.
4. Adjustable Frequency: Operation from 100 kHz to 1 MHz for design flexibility.
5. Soft Start: Built-in soft start feature to limit inrush current during startup.
6. Protection Features: Includes over-voltage, under-voltage, and over-current protection mechanisms.
7. Synchronization Capability: Can be synchronized with external clock signals for reduced noise and improved system performance.
8. Thermal Performance: Designed for high efficiency and thermal management, suitable for various power supply designs.
These features make the UCC28251PWR ideal for applications such as DC-DC converters, battery chargers, and other power management systems.

Pinout

The UCC28251PWR is a high-performance, dual-phase interleaved power factor correction (PFC) controller from Texas Instruments. It features a 28-pin Power Quad (TSSOP) package.
Pin Count: 28
Key Functions:
- Phase Control: Dual-phase operation for enhanced efficiency and reduced ripple.
- VDD and GND: Power supply and ground connections.
- COMP: Compensation network connection for loop stability.
- CSN and CSP: Current sense inputs for overcurrent protection.
- FREQ: Frequency selection for controlling the switching frequency.
- SS: Soft start for a gradual voltage ramp-up.
- PWMOUT: Pulse width modulation output for driving external power switches.
- SYNC: Synchronization input for synchronizing multiple controllers.
- VCM: Voltage control modulation input for maintaining output voltage.
These features make the UCC28251PWR suitable for applications requiring high efficiency and precise voltage regulation in power supply designs.

Manufacturer

The UCC28251PWR is manufactured by Texas Instruments (TI), a global semiconductor company headquartered in Dallas, Texas. Texas Instruments specializes in designing and producing a wide range of electronic components and integrated circuits, particularly analog and mixed-signal devices, processors, and embedded systems. The company serves various markets, including industrial, automotive, communications, and consumer electronics. Texas Instruments is well-known for its emphasis on innovation and reliability in electronic solutions, making it a leading player in the semiconductor industry. The UCC28251PWR, specifically, is a high-performance, pulse-width modulation (PWM) controller used in power management applications, showcasing TI's expertise in power electronics.

Application

The UCC28251PWR is a high-performance PWM controller primarily used in power supply applications. Its application areas include:
1. Switching Power Supplies: For DC-DC converters and AC-DC power supplies in consumer electronics.
2. Industrial Power Supplies: Used in automation and control systems to provide reliable power.
3. Telecommunications: Power management for network equipment and base stations.
4. Renewable Energy Systems: Inverters for solar and wind energy applications.
5. Electric Vehicles: Battery management systems and onboard chargers.
Its efficiency and versatility make it suitable for various power management solutions.

Package

The UCC28251PWR is packaged in a 28-pin TSSOP (Thin Shrink Small Outline Package).

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